Claude Fable 5 vs Muse Wonder
Updated October 21, 2026. 49 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
vs boards won of 49 shared
Decision reading
Pick Claude Fable 5 for coding: it scores 82.1 on the Vibe Coding Index against 64.5 for Muse Wonder.
Pick Muse Wonder when output tokens cost 2.5x less, or when the context window is larger, 1.05M against 1M tokens.
Model AClaude Fable 5Anthropic82.1/1002 independent benchmarks$2.16 per solved taskModel BMuse WonderMeta64.5/1001 independent benchmarkNo cost per solved task
- Shared results
- 49
- Claude Fable 5 only
- 77
- Muse Wonder only
- 11
- Like-for-like categories
- 8 of 9
Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, four public coding benchmarks
Claude Fable 5
Claude Fable 5 scores 82.1 against 64.5.
2 and 1 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only Claude Fable 5 has a AA Intelligence Index result, 49.6.
Directional only
Agentic work
AA Agentic Index
No call
Only Claude Fable 5 has a AA Agentic Index result, 50.7.
Directional only
Reasoning
GPQA Diamond
No call
Only Claude Fable 5 has a GPQA Diamond result, 93.2%.
Directional only
Knowledge
MMLU Pro
No call
Only Claude Fable 5 has a MMLU Pro result, 91.5%.
Directional only
Web design
Design Arena: websites
Muse Wonder
Muse Wonder leads, 1361 against 1296.
Same board, both measured
General
Vals Index
No call
Only Muse Wonder has a Vals Index result, 64.9%.
Directional only
Long documents
Listed context window
Muse Wonder
Muse Wonder takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Muse Wonder
Claude Fable 5 $0.035, Muse Wonder $0.014 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Claude Fable 5 has the number, $2.16.
Directional only
At a glance
- Coding index
- Claude Fable 5 82.1 from 2 benchmarks, Muse Wonder 64.5 from 1 benchmark.
- Widest category
- Web design, 7.4 points apart on average over 6 shared benchmarks.
- Widest single gap
- Vending-Bench 2: Claude Fable 5 $5,680 against Muse Wonder $9,432, 23.4 points apart on a 0 to 100 scale.
- Output price
- Claude Fable 5 $50.00 against Muse Wonder $20.00 per million output tokens, 2.5x apart.
- Context window
- Claude Fable 5 takes 1M tokens, Muse Wonder 1.05M.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Claude Fable 5 | Bars | Muse Wonder | Ties |
|---|---|---|---|---|
| Coding | 2 | 7 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 2 | 4 | ||
| Reasoning | 4 | 0 | ||
| Math | 3 | 0 | ||
| Knowledge | 1 | 3 | ||
| Web design | 0 | 6 | ||
| General | 10 | 6 | ||
| All shared boards | 23 | 26 |
CodingLike-for-likeFour of these boards feed the Vibe Coding Index27
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench coding | 98.3% | Not measured | Only Claude Fable 5 measured |
| LMArena WebDev | 1624 | 1652 | Muse Wonder |
| AA Coding Index | 76.5 | Not measured | Only Claude Fable 5 measured |
| LiveCodeBench (Vals AI) | 89.8% | Not measured | Only Claude Fable 5 measured |
| SWE-bench Verified (Vals AI) | 95.0% | Not measured | Only Claude Fable 5 measured |
| Terminal-Bench 4 (Vals AI) | 41.4% | 49.5% | Muse Wonder |
| Vibe Code Bench (Vals AI) | 90.3% | 83.1% | Claude Fable 5 |
| Code migration (Vals AI) | 55.1% | 62.5% | Muse Wonder |
| ProgramBench (Vals AI) | 2.0% | Not measured | Only Claude Fable 5 measured |
| IOI (Vals AI) | Not measured | 66.9% | Only Muse Wonder measured |
| Terminal-Bench 2.1 (Vals AI) | 80.5% | Not measured | Only Claude Fable 5 measured |
| SWE-bench Multimodal (Vals AI) | Not measured | 45.6% | Only Muse Wonder measured |
| Vibe Code Bench 1-100 (Vals AI) | Not measured | 26.6% | Only Muse Wonder measured |
| CyberBench (Vals AI) | Not measured | 80.4% | Only Muse Wonder measured |
| SciCode | 61.0% | 60.3% | Claude Fable 5 |
| Terminal-Bench Hard (Artificial Analysis run) | 62.9% | Not measured | Only Claude Fable 5 measured |
| FrontierCode | 53.5% | Not measured | Only Claude Fable 5 measured |
| FrontierSWE | 47.0% | Not measured | Only Claude Fable 5 measured |
| GSO-Bench | 78.4% | Not measured | Only Claude Fable 5 measured |
| WeirdML | 91.9% | Not measured | Only Claude Fable 5 measured |
| MirrorCode | 63.9% | Not measured | Only Claude Fable 5 measured |
| ALE-Bench | 2041.3 | Not measured | Only Claude Fable 5 measured |
| LMArena Text: coding | 1518 | 1522 | Muse Wonder |
| LMArena Text: software and IT | 1513 | 1515 | Muse Wonder |
| LMArena WebDev: React | 1631 | 1641 | Muse Wonder |
| LMArena WebDev: HTML | 1651 | 1694 | Muse Wonder |
| LMArena WebDev: from an image | 1623 | Not measured | Only Claude Fable 5 measured |
| Neither model has a result on the other 11 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| AA Intelligence Index | 49.6 | Not measured | Only Claude Fable 5 measured |
| Epoch Capabilities Index | 163.4 | 161.8 | Claude Fable 5 |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index24
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| AA Agentic Index | 50.7 | Not measured | Only Claude Fable 5 measured |
| Design Arena: agents building web apps | 1261 | Not measured | Only Claude Fable 5 measured |
| Design Arena: agents building full-stack apps | 1280 | Not measured | Only Claude Fable 5 measured |
| Design Arena: agents building mobile apps | 1264 | Not measured | Only Claude Fable 5 measured |
| Design Arena: agents building Android apps | 1289 | Not measured | Only Claude Fable 5 measured |
| Design Arena: agents building Godot games | 1292 | Not measured | Only Claude Fable 5 measured |
| Design Arena: agents building games | 1285 | Not measured | Only Claude Fable 5 measured |
| Design Arena: HTML slides | 1277 | Not measured | Only Claude Fable 5 measured |
| Design Arena: PowerPoint slides | 1295 | Not measured | Only Claude Fable 5 measured |
| Design Arena: spreadsheets | Not measured | 1236 | Only Muse Wonder measured |
| LiveBench research | 86.9% | Not measured | Only Claude Fable 5 measured |
| LiveBench browser | 92.0% | Not measured | Only Claude Fable 5 measured |
| LiveBench long agentic | 53.2% | Not measured | Only Claude Fable 5 measured |
| Finance Agent (Vals AI) | 56.3% | 56.6% | Muse Wonder |
| Tax Agent Bench (Vals AI) | 38.3% | 36.3% | Claude Fable 5 |
| Legal Research Bench (Vals AI) | 49.5% | 50.5% | Muse Wonder |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 23.8% | Only Muse Wonder measured |
| Excel Modeling Benchmark (Vals AI) | 73.7% | 67.1% | Claude Fable 5 |
| BioMysteryBench (Vals AI) | Not measured | 67.0% | Only Muse Wonder measured |
| Terminal-Bench-Science (Vals AI) | 15.7% | 22.9% | Muse Wonder |
| Vals Science Index | Not measured | 39.1% | Only Muse Wonder measured |
| CUA-bench (Vals AI) | Not measured | 7.2% | Only Muse Wonder measured |
| τ²-Bench Telecom | 98.5% | Not measured | Only Claude Fable 5 measured |
| APEX-Agents | 63.6% | Not measured | Only Claude Fable 5 measured |
| Remote Labor Index | 16.1% | Not measured | Only Claude Fable 5 measured |
| PostTrainBench | 41.8% | Not measured | Only Claude Fable 5 measured |
| Vending-Bench 2 | $5,680 | $9,432 | Muse Wonder |
| LMArena Search | 1229 | Not measured | Only Claude Fable 5 measured |
| Neither model has a result on the other 11 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| GPQA Diamond | 93.2% | Not measured | Only Claude Fable 5 measured |
| LiveBench reasoning | 89.7% | Not measured | Only Claude Fable 5 measured |
| MysteryMechanism (Vals AI) | Not measured | 27.5% | Only Muse Wonder measured |
| MMMU Pro (Vals AI) | 89.3% | Not measured | Only Claude Fable 5 measured |
| GPQA Diamond (Artificial Analysis run) | 92.6% | Not measured | Only Claude Fable 5 measured |
| Humanity's Last Exam (Artificial Analysis run) | 55.5% | 50.1% | Claude Fable 5 |
| GPQA Diamond (Epoch AI run) | 85.9% | Not measured | Only Claude Fable 5 measured |
| ARC-AGI | 98.5% | Not measured | Only Claude Fable 5 measured |
| ARC-AGI-2 | 89.2% | Not measured | Only Claude Fable 5 measured |
| SimpleBench | 81.9% | Not measured | Only Claude Fable 5 measured |
| Chess puzzles | 47.0% | Not measured | Only Claude Fable 5 measured |
| Mystery game puzzles | 52.0% | Not measured | Only Claude Fable 5 measured |
| EBR-bench | 39.5% | Not measured | Only Claude Fable 5 measured |
| LMArena Text: hard prompts | 1507 | 1506 | Claude Fable 5 |
| LMArena Text: expert | 1534 | 1513 | Claude Fable 5 |
| LMArena Text: hard prompts in English | 1509 | 1506 | Claude Fable 5 |
| LMArena Vision: diagrams | 1357 | Not measured | Only Claude Fable 5 measured |
| LMArena Vision: homework | 1361 | Not measured | Only Claude Fable 5 measured |
| Neither model has a result on the other 3 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| OTIS Mock AIME | 100.0% | Not measured | Only Claude Fable 5 measured |
| FrontierMath, tiers 1 to 3 | 87.0% | Not measured | Only Claude Fable 5 measured |
| FrontierMath, tier 4 | 90.2% | Not measured | Only Claude Fable 5 measured |
| ProofBench | 95.0% | 84.0% | Claude Fable 5 |
| LMArena Text: math | 1516 | 1486 | Claude Fable 5 |
| LMArena Text: mathematical work | 1515 | 1514 | Claude Fable 5 |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index13
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| MMLU Pro | 91.5% | Not measured | Only Claude Fable 5 measured |
| LegalBench (Vals AI) | 88.6% | Not measured | Only Claude Fable 5 measured |
| CorpFin (Vals AI) | 71.8% | Not measured | Only Claude Fable 5 measured |
| TaxEval (Vals AI) | 76.9% | Not measured | Only Claude Fable 5 measured |
| MortgageTax (Vals AI) | 68.9% | Not measured | Only Claude Fable 5 measured |
| MedCode (Vals AI) | 56.1% | Not measured | Only Claude Fable 5 measured |
| SimpleQA Verified | 70.7% | Not measured | Only Claude Fable 5 measured |
| LMArena Text: science | 1506 | 1506 | Claude Fable 5 |
| LMArena Text: medicine and healthcare | 1480 | 1512 | Muse Wonder |
| LMArena Text: legal and government | 1498 | 1505 | Muse Wonder |
| LMArena Text: business and finance | 1480 | 1483 | Muse Wonder |
| Neither model has a result on the other 6 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index06
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: websites | 1296 | 1361 | Muse Wonder |
| Design Arena: UI components | 1318 | 1371 | Muse Wonder |
| Design Arena: game dev | 1336 | 1380 | Muse Wonder |
| Design Arena: data viz | 1304 | 1330 | Muse Wonder |
| Design Arena: 3D | 1319 | 1425 | Muse Wonder |
| Design Arena: all code categories | 1310 | 1370 | Muse Wonder |
| Design Arena: SVG | 1302 | Not measured | Only Claude Fable 5 measured |
| Design Arena: ASCII art | 1328 | Not measured | Only Claude Fable 5 measured |
| LiveBench design | 84.7% | Not measured | Only Claude Fable 5 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index106
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| Vals Index | Not measured | 64.9% | Only Muse Wonder measured |
| LiveBench data analysis | 80.5% | Not measured | Only Claude Fable 5 measured |
| Public Benefits Bench (Vals AI) | 70.4% | 70.2% | Claude Fable 5 |
| SAGE (Vals AI) | 51.9% | Not measured | Only Claude Fable 5 measured |
| MedScribe (Vals AI) | 88.5% | Not measured | Only Claude Fable 5 measured |
| Vals Multimodal Index | 74.2% | Not measured | Only Claude Fable 5 measured |
| IFBench | 63.5% | Not measured | Only Claude Fable 5 measured |
| Long context reasoning (AA-LCR) | 82.3% | 80.7% | Claude Fable 5 |
| DTBench | 98.4% | 95.2% | Claude Fable 5 |
| LMCA | 61.2% | 56.8% | Claude Fable 5 |
| Surface Evolver Bench | 95.0% | Not measured | Only Claude Fable 5 measured |
| Furniture assembly | 35.8% | Not measured | Only Claude Fable 5 measured |
| LMArena Text | 1491 | 1502 | Muse Wonder |
| LMArena Text: instruction following | 1502 | 1491 | Claude Fable 5 |
| LMArena Text: creative writing | 1494 | 1491 | Claude Fable 5 |
| LMArena Vision | 1325 | Not measured | Only Claude Fable 5 measured |
| LMArena Text: English | 1498 | 1507 | Muse Wonder |
| LMArena Text: non-English | 1482 | 1492 | Muse Wonder |
| LMArena Text: Chinese | 1543 | 1537 | Claude Fable 5 |
| LMArena Text: German | 1486 | Not measured | Only Claude Fable 5 measured |
| LMArena Text: Japanese | 1504 | Not measured | Only Claude Fable 5 measured |
| LMArena Text: Korean | 1487 | Not measured | Only Claude Fable 5 measured |
| LMArena Text: French | 1505 | 1523 | Muse Wonder |
| LMArena Text: Spanish | 1498 | Not measured | Only Claude Fable 5 measured |
| LMArena Text: Russian | 1503 | 1522 | Muse Wonder |
| LMArena Text: Polish | 1494 | Not measured | Only Claude Fable 5 measured |
| LMArena Text: multi-turn | 1504 | 1510 | Muse Wonder |
| LMArena Text: longer queries | 1510 | 1493 | Claude Fable 5 |
| LMArena Text: writing and language | 1501 | 1496 | Claude Fable 5 |
| LMArena Text: entertainment and media | 1482 | 1482 | Claude Fable 5 |
| LMArena Vision: English | 1323 | Not measured | Only Claude Fable 5 measured |
| LMArena Vision: Chinese | 1373 | Not measured | Only Claude Fable 5 measured |
| LMArena Vision: reading text | 1337 | Not measured | Only Claude Fable 5 measured |
| LMArena Vision: humor | 1341 | Not measured | Only Claude Fable 5 measured |
| LMArena Vision: creative writing | 1338 | Not measured | Only Claude Fable 5 measured |
| LMArena Document | 1496 | Not measured | Only Claude Fable 5 measured |
| Neither model has a result on the other 10 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Fable 5 | Muse Wonder | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Claude Fable 5$0.035Fits in one request
Muse Wonder$0.014Fits in one request
Muse Wonder costs less
Repository review
50K input + 3K output tokens
Claude Fable 5$0.650Fits in one request
Muse Wonder$0.260Fits in one request
Muse Wonder costs less
Agent loop
200K input + 10K output tokens
Claude Fable 5$2.50Fits in one request
Muse Wonder$1.00Fits in one request
Muse Wonder costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Anthropic Claude Fable 5 | Meta Muse Wonder |
|---|---|---|
| Maker | Anthropic | Meta |
| Weights | No public weights listed | No public weights listed |
| Released | June 9, 2026 | October 12, 2026 |
| Context window | 1M | 1.05M |
| Input $/Mtok | $10.00 | $4.00 |
| Output $/Mtok | $50.00 | $20.00 |
| Coding index | 82.1 | 64.5 |
| Independent measurements behind it | 2 | 1 |
| Cost per solved task | $2.16 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Fable 5 better than Muse Wonder for coding?
Pick Claude Fable 5 for coding: it scores 82.1 on the Vibe Coding Index against 64.5 for Muse Wonder. Pick Muse Wonder when output tokens cost 2.5x less, or when the context window is larger, 1.05M against 1M tokens.
Which is cheaper, Claude Fable 5 or Muse Wonder?
Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens; Muse Wonder costs $4.00 and $20.00. Cost per solved task is known for Claude Fable 5 only.
Which has the bigger context window, Claude Fable 5 or Muse Wonder?
Muse Wonder, with 1.05M tokens against 1M.
How many benchmarks is the Claude Fable 5 vs Muse Wonder comparison based on?
49 benchmarks have a result for both models as of October 21, 2026. Claude Fable 5's coding index rests on 2 independent benchmarks and Muse Wonder's on 1. Where only one model has a result, the page says so instead of naming a winner.